I need to see what plants u have in the viv. I almost lost mine beccause of a umbrella plant which is on a few lists of suggested plants for frog vivs. U could try pedialite, mix 1/10 with water. It's got vitamins and may keep him going for a while. Waxworms are quite a tempting treat, if u have thongs (or tweezers) grasp them by the head and they'll swing around making them irresistable. So go to Walmart or your local bait shop, there like 2$ for 2 doz. Walmart will pick through and give u all live ones if they look bad.